<%--
  Created by IntelliJ IDEA.
  User: oldliu
  Date: 2021/1/27
  Time: 17:05
  To change this template use File | Settings | File Templates.
--%>
<%@ page  contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>This is C</title>
</head>
<body>
<p>C page</p>
<%
    //pageContext.getRequest();
    //pageContext.setAttribute("ddd","1211");
    // exception is null
%>
 <h1><%=request.getAttribute("data")%></h1>
 <h1><%=session.getAttribute("data")%></h1>
 <h1><%=application.getAttribute("data")%></h1>
</body>
</html>
